Richard Thaler stands on his back terrace after the announcement of the 2017 Prize in Economic Scinces, on 9 October 2017.Photo: University of Chicago/Anne Ryan.

Richard Thaler poses with his books after the announcement of the 2017 Prize in Economic Scinces, on 9 October 2017.Photo: University of Chicago/Anne Ryan.

Richard Thaler consults his wife France Leclerc about which shirt to wear for the interviews after being awarded the Prize in Economic Sciences on 9 October 2017.Photo: University of Chicago/Anne Ryan.